121 lines
3.4 KiB
Python
121 lines
3.4 KiB
Python
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import libvirt
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from .base import NodeAgentBase
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from .exceptions import (
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VMNotFound,
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VMStartError,
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VMRebootError,
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VMShutdownError,
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)
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class VirtualMachine(NodeAgentBase):
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def _dom(self, domain: str) -> libvirt.virDomain:
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"""Get virDomain object to manipulate with domain."""
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try:
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ret = self.conn.lookupByName(domain)
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if ret is not None:
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return ret
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raise VMNotFound(domain)
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except libvirt.libvirtError as err:
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raise VMNotFound(err) from err
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def create(
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self,
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name: str,
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volumes: list[dict],
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vcpus: int,
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vram: int,
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image: dict,
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cdrom: dict | None = None,
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):
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# TODO
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pass
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def delete(self, name: str, delete_volumes=False):
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pass
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def status(self, name: str) -> str:
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"""
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Return VM state: 'running', 'shutoff', etc. Ref:
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https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainState
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"""
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state = self._dom(name).info()[0]
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match state:
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case libvirt.VIR_DOMAIN_NOSTATE:
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return 'nostate'
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case libvirt.VIR_DOMAIN_RUNNING:
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return 'running'
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case libvirt.VIR_DOMAIN_BLOCKED:
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return 'blocked'
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case libvirt.VIR_DOMAIN_PAUSED:
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return 'paused'
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case libvirt.VIR_DOMAIN_SHUTDOWN:
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return 'shutdown'
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case libvirt.VIR_DOMAIN_SHUTOFF:
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return 'shutoff'
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case libvirt.VIR_DOMAIN_CRASHED:
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return 'crashed'
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case libvirt.VIR_DOMAIN_PMSUSPENDED:
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return 'pmsuspended'
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def is_running(self, name: str) -> bool:
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"""Return True if VM is running, else return False."""
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if self._dom(name).isActive() != 1:
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return False # inactive (0) or error (-1)
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return True
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def start(self, name: str) -> None:
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"""Start VM."""
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if not self.is_running(name):
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ret = self._dom(name).create()
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else:
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return
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if ret != 0:
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raise VMStartError(name)
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def shutdown(self, name: str, hard=False) -> None:
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"""Shutdown VM. Use hard=True to force shutdown."""
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if hard:
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# Destroy VM gracefully (no SIGKILL)
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ret = self._dom(name).destroyFlags(flags=libvirt.VIR_DOMAIN_DESTROY_GRACEFUL)
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else:
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# Normal VM shutdown, OS may ignore this.
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ret = self._dom(name).shutdown()
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if ret != 0:
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raise VMShutdownError(name)
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def reboot(self, name: str, hard=False) -> None:
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"""
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Reboot VM. Use hard=True to force reboot. With forced reboot
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VM will shutdown via self.shutdown() (no forced) and started.
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"""
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if hard:
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# Forced "reboot"
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self.shutdown(name)
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self.start(name)
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else:
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# Normal reboot.
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ret = self._dom(name).reboot()
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if ret != 0:
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raise VMRebootError(name)
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def vcpu_set(self, name: str, count: int):
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pass
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def vram_set(self, name: str, count: int):
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pass
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def ssh_keys_list(self, name: str, user: str):
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pass
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def ssh_keys_add(self, name: str, user: str):
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pass
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def ssh_keys_remove(self, name: str, user: str):
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pass
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def set_user_password(self, name: str, user: str):
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pass
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